Identify the formula of the corresponding hydride of a nonmetal 'X' which attains octet by gaining three electrons.

Options

A. XH
B. `XH_(2)`
C. `XH_(3)`
D. `X_(2)H_(4)`

Answer

c

Explanation

X should possess five valence electrons since its valency is 3.
Hence, its corresponding hydride is `X^(-3) H^(+1) rArr XH_3`